Breaking news on the Boston Police Department's Twitter account:
"Three additional suspects taken into custody in Marathon bombing case. Details to follow."
We'll follow with more as NPR and other news outlets get additional information.
NPR's coverage of the April 15 bombings that killed three people and wounded more than 250 is collected here.
Update at 11:42 a.m. ET. "No Threat To The Public."
Boston Police add this message in a new tweet: "Please be advised there is no threat to the public."
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